Phonogram.



W. C. RUGEJV XPHONOGRAM. APPLICATION FILED JUNE 23, 1906.

'1 WITNESSES:

PATENTED APR. 16, 1907.

JQ( 9&0. QWJNVENTOR,

TTURN EY.

UNITED sTATEs "PATENT, oEErcE.

vWALTER c. l RUNGE, or CAMDEN, NEW JERSEY, AssieNoE To uvTERNA-4 TIONAL- ROYAL PHONE COMPANY, OF BOSTON, MASSACHUSETTS, A

CORPORATION OF MAINE.

PHoNoenAm.

Specification of Letters Patent. i

Appunti@ med June 23,1906. Serial No. 323,030.

Patented April 16, 1907.`

vented a new anduseful Improvement in 'Ph0nograms, of which the' ollowing is a specification.

My invention relates vto phonograms in lwhich the sound-record is impressed on a flexible record-film which isy distended and supported on-'a detachable sleeve adapted to engage the ordinary graphophone-mandrel.

One obj ect is to so construct the sleeve that it will be self-sustainingv and capableof uni- 3, e sectional view of 4a modication of the` yform radial expansion.

Another object is to reduce the weight and facilitate the storage and transportation of' the record-iilm and to eliminate breakage thereof.

Another object is to provide mechanism l which the record-surface will run concentrically with the mandrel-shaft and true withQrespect to the reproducer.

Iattainl these objects in the manner shown in the accompanying drawings, in which- Figure 1 is a view, partly in section, of my improved phonogram on a mandrel; Fig. 2, a. sectional View of the structure of Fig. 1 Fig.

structure of Fig. 1, -Figsf/l and '5, views ofthe ends of the structure of Fig. 3; and Fig. 6 is an edge view of my improved record-film, indicating the manner in which it may be collapsed lor storage. v

. Like reference characters designate like parts throughout. Y n

The record-film 1 is in tL form of a cylindrical or slightly conical tube of celluloid -or like material lhaving the sound-waves im? pressed in the outer surface thereof. This record, aslshown inFig. 6, is capable of being' iiattened for transportation. l.

To distend and support the record 1 during reproduction, an expanding mandrel sleeve or shell 2, of any suitable rigid material, is used. This sleeve isbored insideto the same taper as the graphoplionamandrel 3, and the" outsidediameter and shape is the same as'the interior ofthe record-film. 4 L

l To decreasefriction betweenthe sleeve 2 and the mandrel 3, the material may be're,

extent.

moved from the interior of the sleeve, leaving the ribs 4 and` bearing-rings 5.

In order that the sleeve may be expansible i radially to receive, distend,r andsu port the tal longitudinal sections 6,7 48 and provided -record 1, it is made in a plurality' o segmenwith means forv preventinglateral displacement of the sections with respect to each other and with `means for maintaining -them in substantially cylindrical form.

As shown in Figs. 1 and 2, the means for preventing lateral displacement com rise the dowels andholes 9. Channels may e made in the outer face of the sleeve and elastici bands or springsslipped therein to maintain the sections in cylindrical form.

. As shown in Figs. 3, 4, and 5, the grooves are made in the edges of the sleeve, and rings v forward end of the'sleeve to act as a stop for p ythe record-film. f y

In use the record-film is slipped over the Y sleeve, and both are pushed on the machinemandrel, as is the case with ordinary phonograms. The pressure iscontinued until the wedging actionof the conical mandrel on the segmental sleeve-has distended' the recordiilm and supported `it throughout its' whole As the sleeve is Vmade to run concentrioally with the shaft 15, on 'whichfthe mandrel ismounted, the record-film will run concentrically therewith', and the sound-record 'surface will run true with respect to the, reproducer, eliminating the throbbing or wavering effect ysometimesproduced by the eccentric phonograms oi' commerce. As the record-nlm is solidly and rigidly supported throughout its entire extent, the vo ume of tained,l as all the motion imparted by the l sound is constant and the maximum to beobsound-Wavesis utilized in moving the diaphragm and none is Wasted in vibrating the phonogram. I claim- 5 1. A graghophone-mandrel sleeve adaptedl to be place on a'graphophonamandrel, comprising longitudinal, segmental sections and means carried Wholly by said sections for preventing relative displacement o said sec- 10 tions.

2.. The combination of a vgraphe hone-4 iiexible record-film mounted on said sleeve and solidly supported thereby during repro- Y duction. zo 3. A grahophone-mandrel sleeve adapted to be place on a graphophne-mandrel-comprising longitudinal, segmental sections `provided With internal bearing-rings adapted to rictionally engage the gra ho'phone-mandrel 2 5 and means carried Wholly y said sections for preventing relative displacement of said vsections. '4. A gra hophone-mandrel sleeve adapted to be place on a gra hophone-mandrel ccm- 30 prising .longitudinali segmental sections, doWels projecting from one longitudinal edge.

of a section, the other longitudinal edge bein provided with holes adapted to receive sai doWels projecting from an adjacent section.

5. Agra hopho'ne-mandrel sleeve adapted 3 5 tions. 45

6. The combination of a tapered graphophone-mandrel a sleeve tapered inside and adapted to engagesaid mandrel, the outerface heilig substantially cylindrical and concentric with the mandrel;' a substantially 5o cylindrical record-film carried on the outer face of said sleeve concentrically With the,

mandrel said sleeve being composed of a series of longitudinal, segmental sectionsv and means earned Wholly by said sections for pre- 5 5 venting relative displacement ofthe sections.

In testimony whereofl I have hereunto subscribed my name this 22d day of June, 1906i 'WALTER C. RUNGlCv Witnesses: l 'j ROBT. B. KILLGORE, F. M. Rosa. 

